Alert archive / South Dakota / Mesoscale Discussions in 2006
Mesoscale Discussion 1973
The Storm Prediction Center issued this mesoscale discussion at Sep 16, 2006, 3:24 PM CDT for 4 states. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Sep 16, 2006, 3:24 PM CDT (20:24 UTC)
- Expired
- Sep 16, 2006, 5:00 PM CDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 94 counties
Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Ida County, IA, Lyon County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sac County, IA, Sioux County, IA, Woodbury County, IA, Big Stone County, MN, Chippewa County, MN, Cottonwood County, MN, Jackson County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Yellow Medicine County, MN, Antelope County, NE, Boyd County, NE, Brown County, NE, Burt County, NE, Cedar County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Holt County, NE, Keya Paha County, NE, Knox County, NE, Pierce County, NE, Rock County, NE, Stanton County, NE, Thurston County, NE, Wayne County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Campbell County, SD, Charles Mix County, SD, Clark County, SD, Clay County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Lyman County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Potter County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Sully County, SD, Tripp County, SD, Turner County, SD, Union County, SD, Walworth County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 66 km from the middle of the area, began a volume at 20:31 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 8.4 hours before the alert went out and 162 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 561 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 481 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 8:32 PM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Buena Vista, Calhoun, Carroll, Cass and 21 more | 58 min |
| Sep 15, 8:50 PM CDT | Severe Thunderstorm Watch | SPC | Crawford, Fremont, Harrison, Mills, Monona, Montgomery and 2 more | 4 hr |
| Sep 16, 1:25 PM CDT | Mesoscale Discussion | SPC | Cherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux and 1 more | 3 hr |
| Sep 16, 1:53 PM CDT | Tornado Watch | SPC | Lyon, Monona, Plymouth, Sioux, Woodbury | 8 hr |
| Sep 16, 3:56 PM CDT | Tornado Watch | SPC | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more | 7 hr |
| Sep 16, 5:07 PM CDT | Tornado Watch | SPC | Buena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 15 more | 8 hr |
| Sep 16, 6:12 PM CDT | Mesoscale Discussion | SPC | Lyon | 63 min |
| Sep 16, 5:29 PM CDT | Tornado Watch | SPC | Aitkin, Becker, Beltrami, Cass, Clay, Clearwater and 17 more | 8 hr |
| Sep 15, 7:06 PM CDT | Tornado Watch | SPC | Butler, Clay, Colfax, Cuming, Dodge, Fillmore and 12 more | 6 hr |
| Sep 15, 11:59 PM CDT | Mesoscale Discussion | SPC | Buffalo, Custer, Dawson, Garfield, Gosper, Greeley and 10 more | 91 min |
Nearby
Mesoscale Discussions in South Dakota, 2006Mesoscale Discussions in Minnesota, 2006Mesoscale Discussions in Nebraska, 2006Every mesoscale discussion in 2006
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.